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Interactions of wind and density driven currents in North Sea ROFIs - a model study Langenberg, H. (1997). Interactions of wind and density driven currents in North Sea ROFIs - a model study. J. Mar. Syst. 12(1-4): 157-170. https://dx.doi.org/10.1016/S0924-7963(96)00095-4 In: Journal of Marine Systems. Elsevier: Tokyo; Oxford; New York; Amsterdam. ISSN 0924-7963; e-ISSN 1879-1573, meer Ook verschenen in: Ruddick, K. (1997). Processes in regions of freshwater influence (PROFILE): selected papers from the 27th International Liège Colloquium on Ocean Hydrodynamics, held in Liège, Belgium, on May 8-12, 1995. Journal of Marine Systems, 12(1-4). Elsevier: The Netherlands. 1-326 pp., meer

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Beschikbaar in	Auteur
VLIZ: Non-open access 329298 [ aanvragen ]

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Trefwoorden

Marien/Kust; Zoet water

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Auteur		Top
Langenberg, H.

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Abstract

Three different versions of a baroclinic three-dimensional circulation model of the North Sea are used to obtain information on the wind and density interactions in the North Sea ROFIs (Regions Of Freshwater Influence): the standard version with fully prognostic treatment of salinity and temperature is compared to a barotropic model run on the same grid on the one hand and to an also fully prognostic model run on a four times coarser grid on the other hand. In order to gain knowledge on the wind and density interactions, two opposing wind directions are chosen for investigation, namely a time of strong north wind, 21st-28th April 1982, and a time of strong southwest wind, 22nd-24th May 1982. In the April case the effect of the salinity gradients on the border of the ROFIs of Rhine, Weser, Ems and Elbe, i.e. along the continental shore, is shown to lead to a clear enhancement of the mean surface currents. In May this result is partly disguised by the additional effect of the thermocline in the deeper parts of the North Sea, i.e. in the classical shelf sea regime region. Nevertheless, the same pattern of enhanced mean surface currents along the coast is detected and is of the same order of magnitude as in the April case. It is thus concluded that although the circulation in the North Sea is reversed by the wind, the density induced component of the general circulation is modified only slightly.

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